# OEF vectors 2D --- Introduction ---

This module contains actually 11 exercises on vectors in 2D (linear combinations, angle, length, scalar product, vector product, etc.).

### Area of parallelogram

(,) , (,) , (,) , (,).

### Area of pentagon

= (,), = (), = (), = (), = ().

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= (,), = (), = (,), = ().

(,), (,), (,).

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### Linear relation

:
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Other exercises on:

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• Description: collection of exercises on 2D vectors. This is the main site of WIMS (WWW Interactive Multipurpose Server): interactive exercises, online calculators and plotters, mathematical recreation and games
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